Saw-filing machine



(No Model.) 2 Sheets-She et 1.

- J. H.. O. WINSTON.

SAW FILING MACHINE.

N0. 320,735. Pate t d une 23,1885

zgg l/ N l WITNESSES INVENTOR BY veal/Wu V V ATTORNEYS.

(No Model.) 2 sneetssneet 2.

J. H. O. WINSTON.

SAW FILING MACHINE. No. 320,735. Patented Jilne 23,1885,

at? BY Jill/m4.

ATTORNEYS.

WITNESS INVENTOR .WW'

N. PEYERS PMiO- IW. Wuhington, D, c

UNITED STATES PATENT OFFICE.

JOHN H. C. WVINSTON, OF LYNGHBURG, VIRGINIA.

SAW-FILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 320,735, dated June 23, 1885.

Application filed April 23, 1884. (No model.)

To all whom it may concern:

Be it known that I, JOHN H. C. WINSTON, of Lynchburg, in the county of Campbell and State of Virginia, have invented a new and Improved Saw-Filing Machine, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved machine for filing saws very rapidly and perfectly.

The invention consists in a machine provided with reciprocating file-holding frames, with jaws for holding the saw, and with means for automatically feeding the saw transverse- 1y to the files. The clamp or jaws for holding the saw are combined with a spring-arm for pressing the jaws together during the time that the files act on the saw, and automatically releasing the jaws during the time that the files make the return-stroke.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a longitudinal sectional elevation .of my improved saw-filing machine. Fig. 2 is a cross-sectional elevation of the same on the line as as, Fig. 1. Fig. 3 is a plan view of the same, parts being broken out.

A frame, A, having suitable legs or supports, is provided on the upper edge of each side bar, A, with atraek-groove, a, and with an upwardly-projecting ridge, 1).

A rack, B, is held in each grooved trackrail, and is provided in its under side with a longitudinal groove, into which the ridge 1) can pass, the said racks being adapted to slide on the track-rails. The two racks engage with the opposite sides of a cog-wheel, G, mounted to turn on a standard on a transverse horizontal partition, c, uniting the two track-rails, on the under side of which cogwheel a beveled pinion, D, is formed, which engages with a semicircular rack, E, pivoted between jaws E, projecting downwardly from the partition 0 in such a manner that it can rock in a vertical plane, which rack is provided with a downwardly-projecting arm, F, having a longitudinal slot, F.

A shaft, G, is journaled in the frame A,

and is provided at one end with a fly-wheel, G, having a handle, G, for turning it. The shaft is provided with a crank, g, which is connected by a connecting-rod, H, with the arm F of the semicircular rack E, the pintle or screw H on the end of the connecting-rod H passing through the slot F of the arm F, and being provided with a winged or other nut, H", thus permitting of adjusting the pintle higher or lower, according to the stroke desired.

On each end of each rack 13 a standard, I, is arranged, from which a pin, 1, projects upward.

The file-holder J consists of a bar united at each end with a tubular standard, J, into which standards the pins I on the standards I pass from the bottom up. In each standard J a rod, K, is held to slide in the direction of the length of the bar uniting the standards, which rod can be locked in place by means of a binding-screw, K, on the top of the standard J.

, On the inner end of each barK a fork, L, is formed, and between the prongs of the fork a frame, M, is held transversely, in which frame file-holding blocks N, which hold the ends of the files, are adapted to slide in the direction at right angles to the lengthof the file-holders J. The said blocks N can be adj listed by means of set-screws N screwed through the ends of the frames M. The file-holders can thus be adjusted to files of any desired length and the files can be adjusted laterally more or less at either end.

7 Each file-holding frame is provided with a laterally-projecting horizontal longitudinal bar, 0, one projecting from the inner edge and the other from the outer edge of the cor responding frame, which plates have their ends 0 and O beveled, as shown in Fig. 1.

On a standard, P, on the transverse partitition c, a Vshaped frame, Q, is held, which is provided with two shanks, Q. The end of one shank is bent over to form a hook, Q which is passed over one bar 0, and the other is left straight to pass in between the corresponding plate 0 and the under side of the bar connecting the two standards J of the fileholding frame.

A fixed jaw, R, is formed on the upper end of the standard around which the cog-wheel Orevolves, and to the said fixed jaw a jaw, R, is hinged which is provided with a downwardly-projecting spring-arm, R the lower end of which is bent and rests againstawheel, S, provided with a series of notches, s,which wheel S is pivoted in suitable jaws, S projecting from the under side of the transverse horizontal partition 0.

Between the jaws R and R a flat bar, T,'is held, which is provided in its top edge withalongitudinal groove for receiving and holding the saw W. The said bar T can be held in the desired position by means of a set-screw, T.

A rocking lever, V, hung on the pivot of the wheel S, is connected by a connecting-rod, V, with the arm F of the semi-circular rack E, and on the said lever V a spring-pawl, U, is fastened, which is adapted to engage in the notches s of the wheel S.

On one of the racks B a plate, d, is secured, which is provided with a slot, 6, part of which is inclined, into which slot the end of ahookarm, passes, which is pivoted to the lower end of a lever, h, provided at its upper end with a hook-pawl, k, resting on the top edge of the jaws R and R. The said lever h is provided with a longitudinal slot, h, through which a screw, Z, passes into a standard, n, which screw Zis provided with a winged nut, 0, for looking it in the desired position.

The blocks or boxes N,for holding the ends of the files, can consist of either a single block provided with an aperture for receiving the file, or of two sections between which a cylinder is held for receiving and holding the end of the file. The files must be adjusted in order to cut a tooth of the desired shape.

The operation is as follows: The shaft G is revolved, thereby rocking the semicircular rack E, which, engaging with the beveled pinion D, revolves the cog-wheel O alternately in opposite directions, thereby reciprocating the two racks B in such a manner that they will move in opposite directions. The files only out while moving in one direction, and during the return movement of the files the saw is shifted. If the file at the left-hand side of Fig. 2 is moved in the direction of the arrow athat is, in the direction toward the shaft end of the machine-the beveled end 0 *of tl 1e plate 0 runs on the hook Q on the end of one shank Q of the V-shaped frame Q, thereby lifting the file-holder and raising the file from the saw, so that the file cannot act on the saw. At the same time the slotted plate at moves the lower end of the lever houtward, thereby moving the inner end inward, and causing the pawl 7c to shift the saw the distance of two teeth. When the plate 0 runs off the beveled hook end of the shank Q, the file-holding frame drops. If the rack is moved in the inverse direction of the arrow a, the beveled end 0 of the plate 0 passes under the hook Q on the end of a shank Q of the frame Q,whereby the file-holding frame is pressed downward, and the file is pressed on the saw and acts on the same. At the same time the other file is being moved in the direction of the arrow a and is raised; but the other file is not raised by means of a hook, as the end of one shank Q passes in between the corre sponding plate 0 and the file-holding frame J. Both files cut at the same time, the files moving in opposite directions. One file cuts while moving in the direction of the arrow at, and the other cuts ,while moving in the inverse direction of the arrow a. After the files have out they are raised automatically and returned, and during this return movement the saw is shifted by means of the pawl 70. The saw is shifted the distance of two teeth, and the files are so arranged that one file cuts the teeth between two teeth cut by the other file. The jaws R and R must be separated when the saw is shifted, and must be pressed together while the file is cutting the saw. This is accomplished by means of the lever V, the pawl U, and the spring R When the files do not cutthat is, when they are moved back to take a fresh grip-the arm F of the semicircular rack E is swung in the direction of the arrow 0, and the free end of the spring-pawl U slides over the edge of the notched wheel S, and its end passes into one of the notches 8. During this time the wheel S is held by the end of the spring-arm R which passes into one of the notches s of the wheel S. iVhen the files move in such a direction that they cut the saw, the lower end of the arm F of the semi circular rack E swings in the inverse direction of the arrow 0, causing the spring-pawl U to turn the wheel S in the direction of the arrow d, whereby the lower end of the springarm R is forced in the direction of the arrow h, and the jaw R is pressed against the sawholder T, held between the jaws It and B. When the lever Vhas completed its stroke in the inverse direction of the arrow 0, the spring-arm R snaps in the inverse direction of the arrow h, and passes into one of the notches s of the wheel S, whereby the swinging jaw R is swung from the fixed jaw R, and the saw is released and can be shifted by means of the pawl 70.

A saw can be passed through the filing-machine one or more times, as may be necessary. As the files operate in opposite directions, they also-assist in setting the saw that is, in partially inclining the teeth in opposite directions. The machine can be operated by hand or power, as may be necessary, and the machine may be made larger or smaller, according to the kind of saws to be filed, and in like manner files of different kinds can be held in the machine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A saw-filing machine constructed with two file-holding frames adapted to reciprocate in opposite directions, to operate both files in opposite directions simultaneously to out and return, and means for moving the saw transversely to the said frames, substantially as herein shown and described.

2. A saw-filing machine constructed with two file-holding frames adapted to reciprocate in opposite directions, to operate both files in opposite directions simultaneously to cut and return a clamp or jaw for holding the saw, means for automatically feeding the saw, and means for automatically clamping the saw between the two jaws while the files are cut ting, substantially asherein shown and described. v

3. In asawfiling machine, the combination, with two reciprocating file-holding frames for operating both files in opposite directions simultaneously to cut and return, means for automatically raising the files above the saws during the return-stroke of the files, and means for feeding the saw, substantially as herein shown and described.

4:. In a saw-filing machine, the combination, with two reciprocating file-holding frames, of a clamp for holding the saw, means for auto matically pressing the jaws of the clamp together during the time that the files cut, and means for automatically releasing the saw during the time that the files are making the return-stroke, substantially as herein shown and described.

5. In a saw-filing machine, the combination, with two horizontally-reciprocating racks, of standards on the same, and afile-holding frame on the standard of each rack, substantially as herein shown and described.

6. In asaw-filingmachine, the combination, with two horizontally-reciprocating racks, of two standards on each rack, a file-holding frame held on the standards of each rack, and of means for holding the files in the file-hold ing frames, substantially as herein shown and described.

7. In asaw-filing machine, the combination, wit-h the file-holding frame J, of the bars K, passing through the end standards of the said frame, and having forks L formed on theirinner ends, of file-holding blocks in the forks, and the screws K, for locking the bars K in place, substantially as herein shown and described.

8. In a saw-filing machine, the combination, with a file-holding frame, J, of the bars K, having forks L on their inner ends, the frames M, held in the said forks, the file -holding blocks N, held in the said frames, and the screws N, for adjusting the file-holding-blocks, substantially as herein shown and described.

9. In a saw-filing machine, the combination, with two horizontally-reciprocating racks, of standards on the same, file-holding frames resting 011 the standards, and means for lifting the file-holding frames during the movement of the racks in one direction, and holding down the said frames during the movement of the racks in the opposite direction, substantiallyas herein shown and described.

10. In asaw-filing machine,the combination,

with the horizontally-reciprocating and vertically-movable file-holding frames, of plates projecting laterally from the same, and of the fork Q, the ends of which are adapted to engage with the said plates and raise the fileholding frames during their movement in one direction and press them down during their movement in the opposite direction, substantially as herein shown and described.

11. In a saw-filing machine, the combination, with the file-holding frames, of the laterallyprojecting plates 0, provided with the beveled ends 0 and O and of the V-shaped frame Q, one of its shanks being provided at the end with a hook. Q substantially as herein shown and described.

12. In a saw-filing machine,the combination, with the cog-wheel C, and the racks B,engaging with the same, of standards on the racks, and file-holding frames held on the said standards, substantially as herein shown and described.

13. Inasaw-filing machine, the combination, with the cog-wheel O, and the beveled pinion D,connected with the same, of the racks B,engaging with the cog-wheel, standards on the racks, file-holding frames on the standards, and of a rocking semicircular rack engaging with the beveled pinion, substantially as herein shown and described.

14. In a saw-filin g machine, the combination, with the cog-wheel G, and the beveled pinion D, connected with the same, of the racks B, engaging with the cog-wheel, standards on the racks, file-holding frames on the standards, the rocking semicircular rack E, having an arm, F, and the connecting-rod H,connecting the said arm with the crankshaft, substantially as herein shown and described.

15. In a saw-filing machine, the combina tion, with a cog-wheel, O, and the beveled pinion D, united with the same, of the racks B, engaging with the cog-wheel, standards on the racks, fileho1ding frames on the standards, a rocking semicircular rack, E, having an arm, F, provided with a longitudinal slot, F, the connecting-rod H, and the pintle I-I, provided with a winged nut, H substantially as herein shown and described.

16. In a saw-filing machine, the combination, with reciprocating file-holding frames, ofa fixed jaw, R, a hinged jaw, It, and the spring R", for pressing the jaw R against the jaw R, substantially as herein shown and described.

17. In a saw-filing machine, the combination, with a reciprocating file-holding frame, of the fixed jaw R, the pivoted jaw R, and the grooved saw-holder T between them, substantially as herein shown and described.

18. In a saw-filing machine, the combination, with a reciprocating file-holding frame, of the fixed jaw R, the pivoted jaw R, the grooved saw-holder T between them, and of the screw II", for holding the saw-holder in place, substantially as herein shown and described.

IIO

19. In a saw-filing machine, the combination, with reciprocating file-holding frames, of the fiXed jaw It, the hinged jaw R, the spring-arm R resting against the notched wheel S, and means for revolving the notched wheel, substantially as herein shown and described.

20. In a saw-filing machine, the combination, with reciprocating file-holding frames, of the fixed jaw It, the hinged jaw R, the spring-arm R connected with jaw R, the notched wheel S, the pivoted lever V, and the spring-pawl U, substantially as herein shown and described.

21. In a saw-filing machine, the combination,withthereciprocatingfile-holdingframes, of the fixed jaw R, the hinged jaw R, the spring-arm R on the jaw R, the notched wheel S, the rocking lever V, the spring-pawl U on the same, the rocking rack E, for reciprocating the file-holders, and the bar V, connecting the said rack with the lever V, substantially as herein shown and described.

22. In a saw-filing machine, the combination,witl1 thereciproeating fileholding frames, of the slotted plate cl, held on one of the reciprocating frames, the pawl 70, for shifting the saw, the pivoted lever h, and the hook y, pivoted to the lower end of the lever h, and passing into the slot 6 of the plate d, substantially as herein shown and described.

23. In a saw-filing machine, the combination, with the reciprocating file-holers, of the slotted plate (I on one of the racks B, the standard n, the lever h, provided with a longitudinal slot, 71/ the pin or screw Z, the winged nut 0, the pawl is, pivoted to the upper end of the 

